[SCEV] [NFC] add more test cases for range of addrecexpr with nsw flag

llvm · Jan 11, 2020 · a701be8 · a701be8
1 parent bb25531
commit a701be8
Showing 1 changed file with 65 additions and 4 deletions.
diff --git a/llvm/test/Analysis/ScalarEvolution/range_nw_flag.ll b/llvm/test/Analysis/ScalarEvolution/range_nw_flag.ll
@@ -39,12 +39,12 @@ exit:
   ret void
 }
 
-; CHECK-LABEL: @test-addrec-nsw
+; CHECK-LABEL: @test-addrec-nsw-start-neg-strip-neg
 ; CHECK: -->  {(-1 + (-10 smin %offset))<nsw>,+,-1}<nsw><%loop> U: [-2147483648,1) S: [-2147483648,1)
-define void @test-addrec-nsw(float* %input, i32 %offset, i32 %numIterations) {
+define void @test-addrec-nsw-start-neg-strip-neg(float* %input, i32 %offset, i32 %numIterations) {
 entry:
-  %cmp = icmp slt i32 %offset, -10 
-  %max = select i1 %cmp, i32 %offset, i32 -10 
+  %cmp = icmp slt i32 %offset, -10
+  %max = select i1 %cmp, i32 %offset, i32 -10
   br label %loop
 loop:
   %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
@@ -58,3 +58,64 @@ loop:
 exit:
   ret void
 }
+
+; CHECK-LABEL: @test-addrec-nsw-start-pos-strip-neg
+; CHECK: -->  {(-1 + (10 smin %offset))<nsw>,+,-1}<nsw><%loop> U: full-set S: full-set
+define void @test-addrec-nsw-start-pos-strip-neg(float* %input, i32 %offset, i32 %numIterations) {
+entry:
+  %cmp = icmp slt i32 %offset, 10
+  %max = select i1 %cmp, i32 %offset, i32  10
+  br label %loop
+loop:
+  %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
+  %nexti = add nsw i32 %i, -1
+  %index32 = add nsw i32 %nexti, %max
+  %ptr = getelementptr inbounds float, float* %input, i32 %index32
+  %f = load float, float* %ptr, align 4
+  %exitcond = icmp eq i32 %nexti, %numIterations
+  br i1 %exitcond, label %exit, label %loop
+
+exit:
+  ret void
+}
+
+; CHECK-LABEL: @test-addrec-nsw-start-pos-strip-pos
+; CHECK: -->  {(1 + (10 smax %offset))<nuw><nsw>,+,1}<nuw><nsw><%loop> U: [0,-2147483648) S: [0,-2147483648)
+define void @test-addrec-nsw-start-pos-strip-pos(float* %input, i32 %offset, i32 %numIterations) {
+entry:
+  %cmp = icmp sgt i32 %offset, 10
+  %min = select i1 %cmp, i32 %offset, i32  10
+  br label %loop
+loop:
+  %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
+  %nexti = add nsw i32 %i, 1
+  %index32 = add nsw i32 %nexti, %min
+  %ptr = getelementptr inbounds float, float* %input, i32 %index32
+  %f = load float, float* %ptr, align 4
+  %exitcond = icmp eq i32 %nexti, %numIterations
+  br i1 %exitcond, label %exit, label %loop
+
+exit:
+  ret void
+}
+
+; CHECK-LABEL: @test-addrec-nsw-start-neg-strip-pos
+; CHECK: -->  {(1 + (-10 smax %offset))<nsw>,+,1}<nsw><%loop> U: full-set S: full-set
+define void @test-addrec-nsw-start-neg-strip-pos(float* %input, i32 %offset, i32 %numIterations) {
+entry:
+  %cmp = icmp sgt i32 %offset, -10
+  %min = select i1 %cmp, i32 %offset, i32  -10
+  br label %loop
+loop:
+  %i = phi i32 [ %nexti, %loop ], [ 0, %entry ]
+  %nexti = add nsw i32 %i, 1
+  %index32 = add nsw i32 %nexti, %min
+  %ptr = getelementptr inbounds float, float* %input, i32 %index32
+  %f = load float, float* %ptr, align 4
+  %exitcond = icmp eq i32 %nexti, %numIterations
+  br i1 %exitcond, label %exit, label %loop
+
+exit:
+  ret void
+}
+